1 /* $NetBSD: getgrouplist.c,v 1.21 2005/01/06 15:10:45 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 2004-2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Luke Mewburn. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 #if defined(LIBC_SCCS) && !defined(lint) 41 #if 0 42 static char sccsid[] = "@(#)getgrouplist.c 8.2 (Berkeley) 12/8/94"; 43 #else 44 __RCSID("$NetBSD: getgrouplist.c,v 1.21 2005/01/06 15:10:45 lukem Exp $"); 45 #endif 46 #endif /* LIBC_SCCS and not lint */ 47 48 /* 49 * calculate group access list 50 */ 51 52 #include "namespace.h" 53 #include <sys/param.h> 54 55 #include <assert.h> 56 #include <nsswitch.h> 57 #include <stdarg.h> 58 #include <unistd.h> 59 60 #ifdef __weak_alias 61 __weak_alias(getgrouplist,_getgrouplist) 62 #endif 63 64 int 65 getgrouplist(const char *uname, gid_t agroup, gid_t *groups, int *grpcnt) 66 { 67 int rv, groupc; 68 69 _DIAGASSERT(uname != NULL); 70 /* groups may be NULL if just sizing when invoked with *grpcnt = 0 */ 71 _DIAGASSERT(grpcnt != NULL); 72 73 groupc = 0; 74 rv = getgroupmembership(uname, agroup, groups, *grpcnt, &groupc); 75 *grpcnt = groupc; /* set groupc to the actual # of groups */ 76 return rv; 77 } 78